code: def test_viewers():
      for viewer in ImageShow._viewers:
          try:
              viewer.get_command("test.jpg")
          except NotImplementedError:
              pass
  
file_path: pillow-simd/Tests/test_imageshow.py
imports: import pytest
  from PIL import Image, ImageShow
  from .helper import hopper, is_win32, on_ci
label_desc: Use image node_id 6 for calling a global function with example usage: test_viewers() without return types